阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。
From Monday to Friday, most people are busy working or studying, but in the evenings and on weekends they are free to relax and enjoy __ (they). Some watch TV__go to the cinemas. Others take part in sports. There are many different ways_   (spend) their spare time.
Almost everyone has some kind of hobbies. It may be anything from collecting stamps to making model airplanes. Some hobbies are expensive, __  others don’t cost anything at all. Some _    (collect) are worth a lot of money. Others are valuable only to the owners.
I know a man who has a coin collection worth $250. He was very happy about his purchase and _  (think) the price was reasonable. _   the other hand, my youngest brother collects matchboxes. He has almost 600 of them but I doubt__   they are worth any money. However, to my brother they are __   (extreme) valuable. Nothing makes him __   (happy) than to find a new matchbox for his collection.
This is what a hobby means, I guess. It is something we like to do in our spare time simply for fun. The value in dollars is not important. We do it for the pleasure it gives.